Spring bed-bottom.



F. KARR.

SPRING BED BOTTOM. APPLICATION FILED JUNE 18, 1910.

1 ,OOO,91 9, Patented Aug. 15, 1911.

lwuwtoz Francis Karr,

FRANCIS KARR, .OF HOLLAND, MICHIGAN.

SPRING- BED-BOTTOM.

Specification of Letters Patent.

Patented Aug. 15, 1911.

Application filed June 18, 1910. Serial No. 567,739.

To all whom it may concern:

Be it known that I, FRANCIS KARE, a citizen of the United States, residing at Holland, in the county of Ottawa and State of Michigan, have invented certain new and useful Improvements in Spring Bed-Bot toms, of which the following is a specification.

My invention relates to improvements in the surface construction of spiral bed bottoms, and its objects are: first, to provide such hinged connection between adjacent rows of springs upon the surface of spiral spring bed bottoms as will, with but one element besides the spring, provide a support or facing across the centers of the tops of the springs; second, to provide against the necessity or danger of any ends ofwire protruding and tearing the mattresses that are supported on the springs, and, third, to provide a spring surface that may be readily and easily assembled and, at the same time, to provide a construction that will be held permanently to place without danger of the springs sliding or turning upon the tie rods, and so constructed as to reduce the danger of relaxation to the minimum. I attain these objects by the mechanism illustrated in the accompanying drawing in which Figure 1 is a plan of adjacent surface coils of a spiral spring bed bottom, partly in perspective, to show the manner of connecting adjacent rows of surface coils. Fig. 2 is an edge view of a piece of the surface coil of a spring showing the offset in the coil, and Fig. 3 is a perspective of adjacent coils showing the manner of connecting and securing them together.

Similar letters refer to similar parts throughout the views shown.

In Fig. 1 A represents the border wire of the bed bottom, which should extend entirely around the outer edges of the surface coils. B B represent the surface coils of the spiral springs. The tie rods C C are passed over the tops of these coils near the adjacent portions of the coils, bent downward, as at c c, thence backward and upward and then forward at right angles with the tie rods, forming two bars that extend across the top of the coils near the center thereof, and have a hook at the U shaped ends that is hooked around the opposite edge of the coil,

- as shown at C, so that the portion C will form a flexible but firm support across the surface of the coils.

When the edges of the coils B are placed adjacent to-the border rods A the bend at c 0, between the rods C C and the cross portions or offsets C thereof, are made large enough to pass around the wire of the spring coil and the border wire, while for tying the coils together between the rows of surface coils, they are made to encircle the two coil wires and the hook C, at each side of the U shaped end of the offsets.

The hook C does not encircle the two adjacent coil wires, but is wound closely around the one that it passes over, in such a way that the tie rods C may be readily wrapped or wound around both wires of the surface coils B B and the hook end of the offset, as well, as hereinbefore intimated and as indicated by the upper tie rod in Fig. 1.

An offset, as b, is formed in the edge of the surface coils, and made to project upward, as indicated in Fig. 2, and it is designed to extend upward between the sides of the offset C, as indicated in Fig. 1, to form a locking device, in connection with said offsets, to prevent the coils from sliding or twisting on the rods, thus rendering the construction firm and unslidable longitudinally of the spring construction, but per-- fectly flexible so far as vertical adjustment or pivotal movement between the coils is concerned, so that while the bed bottom is rigid and strong in its general construction, it is so flexible vertically as to render it very easy to rest upon, and so perfect in adaptability as to render the movement of the parts imperceptible when an occupant is moving or rolling across the surface of the bed bottom, when the springs are properly covered with a mattress.

What I claim as new, and desire to secure by Letters Patent of the United States, 1s:

1. In combination with the surface coils and border rods in spiral spring bed bottoms, a tie rod passing over each row of surface coils near one edge thereof, long U shaped oflsets integral with the tie rods, said offsets passed down through and around the said coils and around the border rods or the surface coils of the adjacent springs as the case may be, thence across the coils first engaged, and a hook formed at the U end of each offset, said hook wound around the opposite edge of the coil first engaged, and the U shaped offset of the tie rod that engages the adjacent row of surface coils wound around the two adjacent coils and the U end of the first placed tie rod, thence passed over the surface of the coil and the U end wound around the opposite edge of the coil it first engages.

2. In combination with the surface coils and the border rods of a spiral spring bed bottom, an ofi'set formed upward in one edge of each surface coil, a tie rod placed over each row of surface coils near said offset, long U shaped offsets formed in said tie rods in lieu of cross tie rods in position to pass through said coils and around the border rod or the adjacent surface coil with the ofisets in the coils between the arms of the offsets in the tie rods, and each offset in the tie rods passed across the adjacent surface coil and secured to the opposite edge thereof, all so arranged that the ofisets in succeeding tie rods may be wound around the edges of adjacent coils and around the ends of the offsets of the tie rods that cover preceding coils. 1

3. In spiral spring bed bottom construction, tie rods connecting and facing the adj acent terminal coils of the rows of spiral springs by means of long U shaped offsets that are integral with the tie rods, said offsets wound around the edges of the coils adjacent to them and each passed over their adjacent coils in lieu of cross tie rods and the ends securely wound around the opposite edges thereof, the winding of said OK- sets around adjacent coils being so arranged that free but firm pivotal joints are formed thereby between adjacent rows of terminal coils, substantially as shown and described.

Signed atGrand Rapids Michigan June 9,1910.

FRANCIS KARR.

In presence of IJJ. CILLEY, V LOUIE CILLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

